CN105416389A - Early fault detection for an EPS system - Google Patents
Early fault detection for an EPS system Download PDFInfo
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- CN105416389A CN105416389A CN201510576686.3A CN201510576686A CN105416389A CN 105416389 A CN105416389 A CN 105416389A CN 201510576686 A CN201510576686 A CN 201510576686A CN 105416389 A CN105416389 A CN 105416389A
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- China
- Prior art keywords
- relation
- value
- temperature
- pressure
- vehicle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0496—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures by using a temperature sensor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3296—Arrangements for monitoring the condition or operation of elastic sealings; Arrangements for control of elastic sealings, e.g. of their geometry or stiffness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
- F16J3/041—Non-metallic bellows
Abstract
The present invention relates to early fault detection for an EPS system, and provides a method and an apparatus for an improved system for early detection of a fault in an EPS system for a vehicle. The apparatus includes a steering gear assembly including a temperature sensor and a pressure sensor for sensing within the steering gear assembly. A controller determines a relationship between the temperature value and the pressure value, and also determines whether the relationship is within a threshold of a reference relationship. The controller can provide an indication or message on a display when the relationship is not within the threshold of the reference relationship. The method includes monitoring a temperature and a pressure associated with an electronic power steering system for a vehicle during operation of the vehicle and determining a relationship between the temperature and the pressure. A fault indication or message is presented on a display when the relationship exceeds a threshold value from a reference relationship.
Description
Technical field
The art relates generally to electrical power steering (EPS) system for vehicle, and the improved system related more specifically to for the early detection of the fault in the EPS of vehicle and method.
Background technology
Electrical power steering (EPS) system comprises several machineries and electronic unit carrys out assisting vehicle operator and carries out handling maneuver.The important mechanical part of operation for EPS is the bellows providing flexible sealing between steering arrangement and intermediate rod.If bellows is due to aging and damaged or generation crack, so moisture can enter steering arrangement.Process in time, too much moisture can cause the short circuit in steering arrangement potentially or freeze, thus causes it to lose efficacy or performance reduction.
Therefore, the early detection of breaking arbitrarily of the bellows being provided in EPS is expected.In addition, expect the possibility notifying that vehicle operators is damaged, make vehicle can more major failure than EPS time more fast and be repaired more at an easy rate.In addition, by reference to the accompanying drawings with aforementioned technical field and background technology, other desired characters of the present invention and feature will be known from subsequent detailed description and claims.
Summary of the invention
There is provided a kind of equipment, it is for the improved system of the early detection of the fault in the EPS of vehicle.In one embodiment, described equipment comprises steering arrangement, and this steering arrangement comprises the temperature sensor for measuring the temperature value in the shell of steering arrangement and the pressure sensor for measuring the force value in steering arrangement.Relation between controller determination temperature value and force value, and determine whether this relation is within the threshold value of referring-to relation.Described equipment also comprises the bellows of the sealing provided between the shell of steering arrangement and the intermediate rod of vehicle.Controller can determine whether sealing is compromised, and provides instruction or message time within the threshold value that described relation is not in referring-to relation over the display.
There is provided a kind of method, it is for the early detection of the fault in the EPS of vehicle.In one embodiment, described method comprises the temperature and pressure of monitoring and being associated with the electrical power steering system of vehicle between the on-stream period of vehicle, and determines the relation between temperature and pressure.When this relation exceeds threshold value from referring-to relation, show indicating fault or message over the display.
1. a method, comprising:
Treater is utilized to monitor the temperature be associated with the electrical power steering system of described vehicle between the on-stream period of vehicle;
Described treater is utilized to monitor the pressure be associated with the electrical power steering system of described vehicle between the on-stream period of described vehicle;
Utilize the relation that described treater is determined between described temperature and described pressure; And
Instruction or message is shown over the display when this relation exceeds threshold value.
2. the method according to scheme 1, wherein monitors the internal operating temperature that described temperature comprises the shell of monitoring described electrical power steering system.
3. the method according to scheme 1, wherein monitors the internal operating pressures that described pressure comprises the steering arrangement of monitoring described electrical power steering system.
4. the method according to scheme 3, wherein comprises vent window in the housing, for discharging the internal pressure of described steering arrangement after exceeding threshold value at described internal pressure.
5. the method according to scheme 1, the relation wherein determining between described temperature and described pressure comprises and the measuring tempeature value in a period of time after having started at the driving engine of described vehicle and measured pressure value being compared.
6. the method according to scheme 5, wherein said treater receives steering angle value, and the relation determining between described temperature and described pressure be included in described measuring tempeature value and described measured pressure value compared before regulate described measured pressure value in response to described steering angle value.
7. the method according to scheme 1, wherein show instruction over the display or message also comprises and described relation and referring-to relation being compared, and when described relation and described referring-to relation exceed described threshold value, show described instruction or message on the display.
8. the method according to scheme 7, also comprises the initial start of the driving engine detecting described vehicle, and produces described referring-to relation by measuring the described temperature that is associated with described electrical power steering system between the on-stream period of described vehicle and described pressure.
9. an electrical power steering system, comprising:
Steering arrangement, comprising:
For measuring the temperature sensor of the temperature value in the shell of described steering arrangement;
For measuring the pressure sensor of the force value in described steering arrangement; And
Controller, is connected to described temperature sensor and described pressure sensor, for determining the relation between described temperature value and described force value, and for determining whether this relation is within the threshold value of referring-to relation; And
The bellows of the sealing between the intermediate rod that the shell of described steering arrangement and described vehicle be provided;
Wherein, whether described controller determination sealing is compromised, and provides instruction or message time within the threshold value that described relation is not in described referring-to relation over the display.
10. the electrical power steering system according to scheme 9, wherein comprises vent window in the housing, for discharging the internal pressure of described steering arrangement after exceeding threshold value at described internal pressure.
11. electrical power steering systems according to scheme 9, wherein said controller is configured to, by the measuring tempeature value in a period of time after having started at the driving engine of described vehicle and measured pressure value being compared, determine the relation between described temperature and described pressure.
12. electrical power steering systems according to scheme 9, wherein said controller receives steering angle value, and be configured to, by regulating described measured pressure value in response to described steering angle value before described measuring tempeature value and described measured pressure value being compared, determine the relation between described temperature and described pressure.
13. electrical power steering systems according to scheme 9, wherein show over the display instruction or message also comprise, described relation and referring-to relation compare by described controller, and when described relation and described referring-to relation exceed described threshold value, show described instruction or message on the display.
14. electrical power steering systems according to scheme 9, wherein said controller is configured to the initial start of the driving engine detecting described vehicle, and produces described referring-to relation by measuring the temperature and pressure that is associated with described electrical power steering system between the on-stream period of described vehicle.
15. 1 kinds of vehicles, comprising:
Wheel;
The driving engine of propulsive effort is applied to described wheel;
Be connected to the intermediate rod of described wheel;
Be connected to electrical power steering device (EPS) system of described intermediate rod, this EPS comprises:
Steering arrangement, comprising:
For measuring the temperature sensor of the temperature value in the shell of described steering arrangement;
For measuring the pressure sensor of the force value in described steering arrangement; And
Controller, is connected to described temperature sensor and described pressure sensor, for determining the relation between described temperature value and described force value, and for determining whether this relation is within the threshold value of referring-to relation; And
The bellows of the sealing between the shell of described steering arrangement and described intermediate rod is provided;
Wherein, whether described controller determination sealing is compromised, and provides instruction or message time within the described threshold value that described relation is not in described referring-to relation over the display.
16. vehicles according to scheme 15, wherein comprise vent window in the housing, for discharging the internal pressure of described steering arrangement after exceeding threshold value at described internal pressure.
17. vehicles according to scheme 15, wherein said controller is configured to, by the measuring tempeature value in a period of time after having started at the driving engine of described vehicle and measured pressure value being compared, determine the relation between described temperature and described pressure.
18. vehicles according to scheme 15, wherein said controller receives steering angle value, and be configured to, by regulating described measured pressure value in response to described steering angle value before described measuring tempeature value and described measured pressure value being compared, determine the relation between described temperature and described pressure.
19. vehicles according to scheme 15, wherein show over the display instruction or message also comprise, described relation and referring-to relation compare by described controller, and when described relation and described referring-to relation exceed described threshold value, show described instruction or message breath on the display.
20. vehicles according to scheme 15, wherein said controller is configured to the initial start of the driving engine detecting described vehicle, and produces described referring-to relation by measuring the temperature and pressure that is associated with described electrical power steering system between the on-stream period of described vehicle.
Accompanying drawing explanation
Describe exemplary embodiment below with reference to accompanying drawing, wherein identical Reference numeral refers to identical element, and in the accompanying drawings:
Fig. 1 is the diagram of the vehicle according to embodiment;
Fig. 2 is the diagram of the steering arrangement of Fig. 1 according to embodiment;
Fig. 3 is the treater of electronic control unit and the diagram of sensor of Fig. 2 according to embodiment;
Fig. 4 A-B is the diagram of the temperature and pressure relation of the steering arrangement of Fig. 2 according to embodiment;
Fig. 5 is the diagram indicated according to the warning of embodiment; And
Fig. 6 describes the diagram of circuit according to the method for embodiment.
Detailed description of the invention
Following detailed description is in fact only exemplary, and is not intended to restriction application and uses.In addition, intention is not had to be defined by the theory clear and definite or in secret arbitrarily provided in aforementioned technical field, background technology, summary of the invention or detailed description of the invention hereafter.
In this article, such as the first and second relational languages such as grade etc. can only be used to an entity or action to separate with another entity or active region, and not necessarily need or imply to there is the such relation of any reality or order between these entities or action.The such as digital number such as " first ", " second ", " the 3rd " only represent multiple in Different Individual, and do not imply any order or sequence, unless be particularly limited to by claim language.
In addition, following description mention element feature is " connected " or " connection " together.As use alpha nerein, " connection " can refer to an element/feature and directly be attached to (or being directly communicated in) another element/feature, and not necessarily machinery.Equally, " connection " can refer to an element/feature and directly or indirectly be attached to (or being communicated in directly or indirectly) another element/feature, and not necessarily machinery.Although it should be understood, however, that and two elements may be described as " connection " in one embodiment below, like can " connect " in alternative embodiments, and vice versa.Therefore, although the example that shown here schematic diagram depicts element is arranged, additional intervention element, device, feature or parts can be there are in an actual embodiment.
Finally, for the sake of simplicity, at this, routine techniques relevant to other function aspects (with each operating unit of system) of vehicle electric and mechanics and system and parts may be described in no detail.In addition, the connection lead shown in each figure comprised herein is intended to the example functional relationships that represents between each element and/or physical connection.It should be noted that can to exist in an embodiment of the present invention many alternative or additional functional relationships or physical connection.Should also be understood that Fig. 1-Fig. 6 is only exemplary, and can not to scale (NTS) draw.
With reference to accompanying drawing, wherein identical Reference numeral refers to identical parts, and Fig. 1 illustrates the vehicle 100 comprising exemplary embodiment of the present invention.Vehicle 100 can be any one in a large amount of dissimilar vehicle, such as car, lorry, truck or SUV (sport utility vehicle) (SUV), and vehicle 100 can be two-wheel drive (2WD), four wheel drive (4WD) or a11wheel drive (AWD).Vehicle 100 also can comprise any one or combination in a large amount of dissimilar driving engine, described driving engine be such as such as gasoline or diesel oil feed combustion engine, composite fuel vehicle (FFV) driving engine (namely, use the compound of gasoline and ethanol), gaseous compound (such as, hydrogen and/or natural fuels) feed driving engine, burning/electro-motor hybrid power engine and electro-motor.
The vehicle 100 of illustrated embodiment comprises electrical power steering (EPS) system 102.EPS 102 comprises steering column assembly 104, steering arrangement 106, motor sub-assembly 108, controller 110 and two wheel steering assemblies 112, and wherein each Vehicular turn assembly 112 is connected to wheel (and tire) 114.Certainly, some of these parts, device, assembly, system etc. that just can use together with EPS 102, because miscellaneous part as known in the art, device, assembly, system can use as above-mentioned replacement or supplement.
Steering assembly 104 comprises the wheel flutter 116 being rotatably connected to Steering gear 118, and the intention that turns to of chaufeur is passed to other parts of EPS 102 by it.Usually, conventional Turning connecting assembly 118 comprises one or more steering shaft as a part for Turning connecting assembly 118 and steering knuckle.Certainly it should be appreciated that aforementioned description is only general and Exemplary physical properties, because various Turning connecting assembly embodiment also can be used, comprise the assembly with more, less and/or different parts.
Turning connecting assembly 118 is connected to steering arrangement 106, and the rotary motion of its in the future low damage coupling assembling 118 converts the side direction or lateral vehicle motion that can be used in the wheel 114 rotating vehicle to.In certain embodiments, steering arrangement 106 can be implemented as steering by rack and pinion device assembly, but also can use other steering arrangement.
Motor sub-assembly 108 provides power-assisted to EPS 102, to supplement the manual steering effort produced by chaufeur.This makes to turn to more easily and more leicht fallen D/A.Usually, motor sub-assembly 108 comprises electro-motor, power input and one or more gear, pulley, band, bearing etc., realizes the preferred ratio of motor armature and tooth bar speed.According to implemented specific embodiment, the motor of used in the art any other types that electro-motor can be brushless motor, brush motors or those skilled in the art will recognize that.
Motor sub-assembly 108 works to provide power-assisted to turn under the instruction of controller 110 to make vehicle 100.Controller 110 performs calculating and the controlling functions of EPS 102, such as, and can comprise the treater of any type or multiple treater, the cooperating of the single integrated circuits such as microprocessor or arbitrarily right quantity completes IC apparatus and/or the circuit card of the function of processing unit.During operation, controller 110 receives data from sensor (or sensor array) 120 and 122, and controller uses described sensor to determine whether and to what extent makes great efforts to provide power-assisted to the turning to of chaufeur of vehicle 100.
Sensor 120 is connected to steering arrangement 106(or is integrated in steering arrangement 106).Any sensor that the measurement of the direction information provided from Turning connecting assembly 118 can be provided can be used in sensor 120.Exemplarily, and nonrestrictive, in sensor array 120, it can be useful for measuring the sensor turning to input (such as steered wheel angle, wheel flutter torque, wheel flutter speed, wheel flutter acceleration/accel and wheel flutter torque gradient).
Turn to except input except what stem from driver actions, (and to what extent) provides turning to of power-assisted also may be useful for determining whether for other vehicle datas or condition.Therefore, sensor 122 can spread all over vehicle 100 and distribute, but is conveniently depicted as the single-sensor array being connected to controller 110.Car speed, vehicle fore-aft acceleration, vehicle lateral acceleration, flower wheel speed and non-driven wheel speed is included but not limited to for determining how to control the vehicle sensors that motor sub-assembly 108 comes in handy.
In the operation of EPS 102, motor sub-assembly 108 provides power-assisted to move the wheel steering assembly 112 being connected to motor sub-assembly via intermediate rod 124.Usually, wheel steering assembly 112 supported vehicle tire and comprise multiple conventional rotation members.Such as, wheel steering assembly 112 generally includes and rotates hub, rotating disc or rotor and the wheel with mounting tyre.When vehicle 100 is just by driving, all these devices rotate jointly.Also disk braking system (not shown) can be installed on vehicle to interact with wheel steering assembly 112, but also can use other brake system, such as drum brake mechanism.
Fig. 2 illustrates in greater detail EPS 102.In the example shown, the steering arrangement 106 of EPS 102 comprises shell 200 and bellows 202.Bellows 202 provides the flexible sealing between shell 200 and intermediate rod 124.As will be appreciated, during the turn control of vehicle, because intermediate rod motion will make bellows be compressed or stretch.Steering arrangement 106 also comprises motor 108 and controller (such as, electronic control unit) 110 and power transfer assembly 204, and the power of motor is applied to steering arrangement so that assisted diversion is handled by this power transfer assembly 204.In certain embodiments, power transfer assembly 204 is embodied as V belt translation assembly.Sensor module 120 is included in the sensor of any amount desired in any detailed description of the invention of EPS 102.The non-limiting example of sensor comprises steered wheel angle, wheel flutter torque, wheel flutter speed, wheel flutter acceleration/accel and wheel flutter torque gradient.In certain embodiments, via cable 208, sensor reading can be sent to controller 110, to be used by the treater in controller.
Meet with stresses in operation as compliant member, bellows 202 is parts that the most probable of EPS 102 is compromised or lost efficacy.Road debris by piercing through or otherwise damaging bellows 202, so that destroys sealing, thus allows moisture to enter steering arrangement.Do not correct if maintain within a period of time, then moisture buildup can reduce the performance of EPS 102, or causes EPS 102 to lose efficacy in extreme circumstances thus cause loss power-assisted to turn to.For the operator of vehicle, it can be expensive and consuming time for repairing or change EPS 102 in this stage.Therefore, basic embodiment of the present invention is that vehicle operators provides early detection and warning.In this way, can carry out fast and the repairing of cheapness, thus save the time and money of vehicle operators.
In order to realize this benefit, monitoring the internal operating temperature in steering arrangement 106 and pressure after engine start-up, and the referring-to relation stored in the relation between the temperature and pressure of measurement and controller 110 is compared.Because steering arrangement 106 is sealing system (via bellowss 202), so pressure when making temperature increase when the running due to vehicle reduces or loss shows that sealing has been destroyed and has needed to repair.As will be appreciated, in any time that pressure can leak from steering arrangement 106, moisture can enter and start to damage EPS 102.Comprise vent window 206 in certain embodiments, in air that excess pressure is released to prevent overpressure situation.In such embodiments, preferably utilize until reach the vent window that set pressure just opens.In this way, benefit of the present invention can be realized, simultaneously still for EPS 102 provides overvoltage protection.
Fig. 3 is the block diagram of the operating unit of controller 110.Treater 300 receives input from temperature sensor 302 and pressure sensor 304.Treater 300 also receives driving engine run signal 306.Treater uses driving engine run signal to determine when to start to measure the temperature and pressure in steering arrangement 106, and determines whether the relation between temperature and pressure is in the threshold value of the referring-to relation be stored in treater 300.308 are deflection angles to another input of treater 300, they can by other sensors 122 of sensor 120(or Fig. 1) provide.As will be appreciated, because bellows 202 is compressed and stretches, so internal pressure will change in response to this motion.Therefore, some embodiments used deflection angle input to regulate the pressure from pressure sensor 304 to input before comparing with referring-to relation.In other embodiments, deflection angle input can be utilized to make only to carry out temperature and pressure measurement when deflection angle is approximately zero (that is, vehicle straight travels forward), to avoid making treater carry out regulating the extra computation of the internal pressure measured.As discussed below, when the temperature and pressure relation measured changes from the referring-to relation for temperature and pressure, controller 300 sends signal 310, thus makes designator or message present to the operator of vehicle, if so that need, can check and repair EPS 102.
Fig. 4 A-B is the chart (400 and 400 ') of the relation illustrated between temperature and pressure.The temperature and pressure value that Y-axis 402 and 402 ' representative increase, and X-axis 404 and 404 ' representative are from the time of the increase of engine starting.As can be seen in Fig. 4 A, during the operation of EPS 102, both internal operating temperature 406 and pressure 408 all in time through and increase.According to Measuring Time, the difference between temperature value 406 and force value 408 should have predetermined relationship.As non-restrictive example, the difference between the temperature value 406 and force value 408 of time 410 is less than the difference between the temperature value 406 and force value 408 of time 412.According to the embodiment realized, the relation between the difference between temperature value 406 and force value 408 can be determined at single time point or on several time points.And the difference between the temperature value 406 and force value 408 at several time point places can be weighted according to the embodiment of the present invention or be averaged.In addition, if expected, then can to temperature value 406 and force value 408 applied statistics.As will be appreciated, as long as produce (will hereafter discuss) referring-to relation in the same manner, then adopted relation deterministic process can be any desired process.Although Fig. 4 A shows the EPS of proper function, Fig. 4 B shows one or two situation of breaking in bellows (202 in Fig. 2).If see such, although temperature value 406 ' in time through and increase, force value 408 ' all remains zero in time 410 ' and 412 ' place.Under these circumstances, the relation determined between temperature value 406 ' and force value 408 ' is not in the threshold value (it follows Fig. 4 A) of referring-to relation by treater (300 in Fig. 3), and (in the viewing area 500 of Fig. 5) provides instruction or message, make the operator of vehicle can occur to EPS more badly damaged before check and repair EPS.
Fig. 6 shows the diagram of circuit for the method and operation mode understanding the early warning for providing the fault in EPS.The various tasks performed with the methods combining of Fig. 6 can by software, hardware, firmware or its combine to perform.In order to exemplary object, the following description of the method for Fig. 6 can refer to the element that composition graphs 1-Fig. 3 above mentions.In fact, the part of the method for Fig. 6 can be performed by the different elements of described system.Should also be appreciated that the method for Fig. 6 can comprise the additional of any amount or substituting task, and the method for Fig. 6 can be incorporated in the program widely or process with the additional function do not described in detail at this.And one or more task shown in Fig. 6 can be omitted from the embodiment of the method for Fig. 6, as long as desired allomeric function remains intact.
Method 600 starts from frame 602, detects engine starting (signal 306 in Fig. 3) and determine that whether this be that the initial engine of vehicle starts at this controller (110 in Fig. 3).Initial engine is used to start the referring-to relation determining to produce for the service temperature in steering arrangement (106 in Fig. 2) and pressure.In certain embodiments, initial engine can be detected by the referring-to relation of the memory location not being present in treater 300 to start.Usually, the determination of initial engine starting will be produced at the first time engine starting of factory.But, after having repaired EPS, there will be another initial engine start situation.Such as, one or two of bellows (202 in Fig. 2) may have been changed during repair procedures.As will be appreciated, process in time, can introduce new material or the specification of bellows, and this will cause the change of measuring tempeature and pressure.Therefore, after repairing, technician will make controller 110 reset (or removing) referring-to relation, so that engine starting will be detected as initial engine and start next time, and by as above composition graphs 4A discuss in time through carrying out measuring and cause the generation (frame 604) of new referring-to relation.On the contrary, if frame 602 determines that the engine starting detected is not that initial engine starts, then program proceeds to frame 606, passes through in time and measure internal operating temperature and pressure at this.Next, frame 608 determines whether the difference between measuring tempeature and pressure is in the threshold value of the referring-to relation of the temperature and pressure provided by frame 604.If so, then end of program in frame 610 until engine starting next time.If not, then frame 612 provides warning instruction or message to the operator of vehicle, such as shown in Figure 5.
Although given at least one exemplary embodiment in aforementioned detailed description, it is to be appreciated that to there is a large amount of modification.It will also be appreciated that one or more exemplary embodiment is only example, and be not intended to limit the scope of the invention by any way, application or structure.Aforementioned detailed description but facilitate guilding principle by what be provided for implementing one or more exemplary embodiment for those skilled in the art.It should be understood that when do not depart from as claims and legal equivalents thereof stated scope of the present invention, various change can be carried out in the function of element with in arranging.
Claims (10)
1. a method, comprising:
Treater is utilized to monitor the temperature be associated with the electrical power steering system of described vehicle between the on-stream period of vehicle;
Described treater is utilized to monitor the pressure be associated with the electrical power steering system of described vehicle between the on-stream period of described vehicle;
Utilize the relation that described treater is determined between described temperature and described pressure; And
Instruction or message is shown over the display when this relation exceeds threshold value.
2. method according to claim 1, wherein monitors the internal operating temperature that described temperature comprises the shell of monitoring described electrical power steering system.
3. method according to claim 1, wherein monitors the internal operating pressures that described pressure comprises the steering arrangement of monitoring described electrical power steering system.
4. method according to claim 3, wherein comprises vent window in the housing, for discharging the internal pressure of described steering arrangement after exceeding threshold value at described internal pressure.
5. method according to claim 1, the relation wherein determining between described temperature and described pressure comprises and the measuring tempeature value in a period of time after having started at the driving engine of described vehicle and measured pressure value being compared.
6. method according to claim 5, wherein said treater receives steering angle value, and the relation determining between described temperature and described pressure be included in described measuring tempeature value and described measured pressure value compared before regulate described measured pressure value in response to described steering angle value.
7. method according to claim 1, wherein show instruction over the display or message also comprises and described relation and referring-to relation being compared, and when described relation and described referring-to relation exceed described threshold value, show described instruction or message on the display.
8. method according to claim 7, also comprise the initial start of the driving engine detecting described vehicle, and produce described referring-to relation by measuring the described temperature that is associated with described electrical power steering system between the on-stream period of described vehicle and described pressure.
9. an electrical power steering system, comprising:
Steering arrangement, comprising:
For measuring the temperature sensor of the temperature value in the shell of described steering arrangement;
For measuring the pressure sensor of the force value in described steering arrangement; And
Controller, is connected to described temperature sensor and described pressure sensor, for determining the relation between described temperature value and described force value, and for determining whether this relation is within the threshold value of referring-to relation; And
The bellows of the sealing between the intermediate rod that the shell of described steering arrangement and described vehicle be provided;
Wherein, whether described controller determination sealing is compromised, and provides instruction or message time within the threshold value that described relation is not in described referring-to relation over the display.
10. a vehicle, comprising:
Wheel;
The driving engine of propulsive effort is applied to described wheel;
Be connected to the intermediate rod of described wheel;
Be connected to electrical power steering device (EPS) system of described intermediate rod, this EPS comprises:
Steering arrangement, comprising:
For measuring the temperature sensor of the temperature value in the shell of described steering arrangement;
For measuring the pressure sensor of the force value in described steering arrangement; And
Controller, is connected to described temperature sensor and described pressure sensor, for determining the relation between described temperature value and described force value, and for determining whether this relation is within the threshold value of referring-to relation; And
The bellows of the sealing between the shell of described steering arrangement and described intermediate rod is provided;
Wherein, whether described controller determination sealing is compromised, and provides instruction or message time within the described threshold value that described relation is not in described referring-to relation over the display.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/484815 | 2014-09-12 | ||
| US14/484,815 US20160075372A1 (en) | 2014-09-12 | 2014-09-12 | Early fault detection for an eps system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105416389A true CN105416389A (en) | 2016-03-23 |
Family
ID=55406232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510576686.3A Pending CN105416389A (en) | 2014-09-12 | 2015-09-11 | Early fault detection for an EPS system |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20160075372A1 (en) |
| CN (1) | CN105416389A (en) |
| DE (1) | DE102015115377A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113147892A (en) * | 2021-05-11 | 2021-07-23 | 浙江吉利控股集团有限公司 | Steering transmission mechanism safety early warning method and system and vehicle |
| CN113247085A (en) * | 2020-02-11 | 2021-08-13 | 罗伯特·博世有限公司 | Detecting damage to components of an electric power steering system |
| CN114761308A (en) * | 2020-03-04 | 2022-07-15 | 舍弗勒技术股份两合公司 | Method for steering a vehicle, actuator for a rear axle steering system of a vehicle and rear axle steering system having such an actuator |
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| CN104029716A (en) * | 2013-03-05 | 2014-09-10 | 株式会社捷太格特 | Electric power steering system |
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2014
- 2014-09-12 US US14/484,815 patent/US20160075372A1/en not_active Abandoned
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- 2015-09-11 DE DE102015115377.7A patent/DE102015115377A1/en not_active Withdrawn
- 2015-09-11 CN CN201510576686.3A patent/CN105416389A/en active Pending
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| US20040144592A1 (en) * | 2003-01-24 | 2004-07-29 | Visteon Global Technologies, Inc. | Steer-by-wire system and method for actuating road wheels of a vehicle |
| US20060175117A1 (en) * | 2003-09-30 | 2006-08-10 | Bayerische Motoren Werke Aktiengesellschaft | Method for operating a power-assisted hydraulic steering system in a motor vehicle |
| CN101480967A (en) * | 2008-01-09 | 2009-07-15 | 株式会社电装 | Steering system for vehicle |
| US8002077B2 (en) * | 2008-07-18 | 2011-08-23 | Thyssenkrupp Presta Ag | Electrical power steering with air discharge system |
| US20110282551A1 (en) * | 2010-05-11 | 2011-11-17 | Hitachi Automotive Systems, Ltd. | Power steering apparatus |
| US20130031960A1 (en) * | 2011-08-03 | 2013-02-07 | John Crane Inc. | Seal gas monitoring and control system |
| CN103786783A (en) * | 2012-10-29 | 2014-05-14 | 福特全球技术公司 | Power steering system with ball screw |
| CN104029716A (en) * | 2013-03-05 | 2014-09-10 | 株式会社捷太格特 | Electric power steering system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113247085A (en) * | 2020-02-11 | 2021-08-13 | 罗伯特·博世有限公司 | Detecting damage to components of an electric power steering system |
| CN114761308A (en) * | 2020-03-04 | 2022-07-15 | 舍弗勒技术股份两合公司 | Method for steering a vehicle, actuator for a rear axle steering system of a vehicle and rear axle steering system having such an actuator |
| CN113147892A (en) * | 2021-05-11 | 2021-07-23 | 浙江吉利控股集团有限公司 | Steering transmission mechanism safety early warning method and system and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160075372A1 (en) | 2016-03-17 |
| DE102015115377A1 (en) | 2016-03-17 |
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Application publication date: 20160323 |